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研究生: 羅經閔
Ching-Min Lo
論文名稱: 利用UKIDSS-UDS資料來統計紅移1到3之間的紫外線光度密度
UKIDSS-UDS: UV-Luminosity density at 1<z<3
指導教授: 傅谷石
Sebastien Foucaud
學位類別: 碩士
Master
系所名稱: 地球科學系
Department of Earth Sciences
論文出版年: 2013
畢業學年度: 101
語文別: 英文
論文頁數: 51
中文關鍵詞: star-forming galaxystar-formation ratestar formation history
英文關鍵詞: star-forming galaxy, star-formation rate, star formation history
論文種類: 學術論文
相關次數: 點閱:168下載:1
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  • The star formation history is a key-element to understand galaxy evolution and formation. Recent studies have shown that the star-formation rate peaks at redshift z=1-3 and then decline to its local value. The physical processes responsible for the sudden quenching of star-formation are still unknown. In order to better understand the origin of these effects, we propose in this study to use the UV-luminosity as an indicator of the Star-formation rate. We take advantage of our deep NIR/optical data from the UKIDSS-UDS/SXDS survey and our very deep CFHT U-band data to compute the luminosity function of galaxies at z=1-3. Then we fit a Schechter function and integrate to compute the luminosity density to explore the evolution of the star-formation rate.

    The star formation history is a key-element to understand galaxy evolution and formation. Recent studies have shown that the star-formation rate peaks at redshift z=1-3 and then decline to its local value. The physical processes responsible for the sudden quenching of star-formation are still unknown. In order to better understand the origin of these effects, we propose in this study to use the UV-luminosity as an indicator of the Star-formation rate. We take advantage of our deep NIR/optical data from the UKIDSS-UDS/SXDS survey and our very deep CFHT U-band data to compute the luminosity function of galaxies at z=1-3. Then we fit a Schechter function and integrate to compute the luminosity density to explore the evolution of the star-formation rate.

    1. Introduction 1.1. Cosmic star formation rate -3- 1.2. Tracers of star formation rate -4- 1.3. Thesis structure -4- 2. Data -6- 2.1. Photometric redshift -10- 2.2. Absolute magnitude -14- 2.3. Stellar mass -17- 3. Luminosity Function -19- 4. B-band Luminosity Function up to z ~ 2 -21- 5. UV Luminosity Function at z=1-3 -24- 6. UV Luminosity Density at z=1-3 -30- 7. UV Luminosity Density of Low Stellar Mass System -33- 8. Conclusion and Summary -35- 9. Reference -37- Appendix A1 -40- Appendix A2 -43- Appendix A3 -48-

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